Less well-known than ELIZA, PARRY [1]} is another notable chatbot that was created a decade after ELIZA. PARRY was designed to be a simulation of mental states. In particular, PARRY was meant to simulate a paranoid schizophrenic patient to help researchers and therapists understand more complex human conditions. In this regard, PARRY stands as notable as a case outside of information-seeking, task-completion, etc. where the primary goal is truly to understand humans through simulation. More relevant to current research was a humorous attempt by Vint Cerf to get PARRY and ELIZA to engage in a conversation with each other (see excerpt in Figure REF ). While the conversation excerpt may not be the most stunning example, it is one of the earliest cases of completely automated multi-agent system interaction. As chatbots for task completion become more common, this ELIZA-PARRY interaction is also one of the earliest examples of a more nascent and speculative line of research on multi-agent systems [2]}. In particular, this is an early example of the possible future where autonomous chatbots might negotiate on behalf of a specific user and be able to handle negotiations with other autonomous agents – whether they are humans or bots. Again, the example interaction highlights the brittle nature of early chatbot systems.
